Finding the Fourth Proportional to 2,661.48, 3,995.01 and 1,275.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,661.48 : 3,995.01 = 1,275.98 : x
2. Step 2: Convert to fraction form
   2,661.48/3,995.01 = 1,275.98/x
3. Step 3: Cross multiply
   2,661.48x = 3,995.01 × 1,275.98
4. Step 4: Simplify right side
   2,661.48x = 5,097,532.88
5. Step 5: Solve for x
   x = 5,097,532.88/2,661.48
6. Step 6: Final answer
   x = 1,915.30